Add renovate.json

#### 📖 Summary

<!-- Provide a summary of your changes. Describe the why and not how. -->

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] CI pipeline tests
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

<!-- Add your test details or justification for missing tests here. -->

#### 📚 Additional Notes

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Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: #5

renovate.json

@@ -0,0 +1,3 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+}